Update raid 2026 (#1364)

* Update raid.yml

* Update uss.yml

Author: FeliceRivarez

conference/SC/raid.yml

@@ -40,3 +40,11 @@
       timezone: AoE
       date: October 19-22, 2025
       place: Gold Coast, Australia
+    - year: 2026
+      id: raid26
+      link: https://raid2026.org
+      timeline:
+        - deadline: '2026-04-16 23:59:59'
+      timezone: AoE
+      date: October 11-14, 2026
+      place: Lancaster, UK

conference/SC/uss.yml

@@ -70,3 +70,16 @@
       timezone: UTC-12
       date: August 12-14, 2026
       place: Baltimore, MD, USA
+    - year: 2027
+      id: uss27
+      link: https://www.usenix.org/conference/usenixsecurity27
+      timeline:
+        - abstract_deadline: '2026-08-18 23:59:59'
+          deadline: '2025-08-25 23:59:59'
+          comment: Cycle 1 Deadline
+        - abstract_deadline: '2026-01-19 23:59:59'
+          deadline: '2026-01-26 23:59:59'
+          comment: Cycle 2 Deadline
+      timezone: UTC-12
+      date: August 11-13, 2027
+      place: Denver, CO, USA